linux-kernel - Re: [PATCH -mm v4 6/9] atmel_serial: Split the interrupt handler

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Message-ID: <47B2CF76.6050704@gandalf.sssup.it>
Date:	Wed, 13 Feb 2008 12:07:34 +0100
From:	michael <trimarchi@...dalf.sssup.it>
To:	Remy Bohmer <linux@...mer.net>
CC:	Haavard Skinnemoen <hskinnemoen@...el.com>, fabio@...dalf.sssup.it,
	Andrew Victor <linux@...im.org.za>,
	Chip Coldwell <coldwell@...hat.com>,
	Marc Pignat <marc.pignat@...s.ch>,
	David Brownell <david-b@...bell.net>,
	linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH -mm v4 6/9] atmel_serial: Split the interrupt handler

Hi,

All works now for me with preempt-rt. The problem is using hrtimer.

I think that hrtimer are executed with interrupts disabled so, if
this happen when I must receive a char, i have an overrun. The only
solution was the dma support to serial device.

Regards Michael

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